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Math

1183 min11part Calculus course47 CQ
Need some tips for Calculus 1A? Or maybe you’re madly reviewing for tomorrow's math test? Either way, never fear  Krista, an experienced math tutor, will help you understand the world of calculus, stepbystep. Start by learning the difference between a function and an equation  and how to analyze a function's graph for continuity and limits. Then, step into the world of tangent lines, differentiation, and more. Each lesson includes examples and sample problems to help you along the way.
with integralCALCNeed some tips for Calculus 1A? Or maybe you’re madly reviewing for tomorrow's math test? Either way, never fear  Krista, an experienced math tutor, will help you understand the world of calculus, stepbystep. Start by learning the difference between a function and an equation  and how to analyze a function's graph for continuity and limits. Then, step into the world of tangent lines, differentiation, and more. Each lesson includes examples and sample problems to help you along the way.

10129 min10part Math course70 CQ
Statistics may sound like a dry topic, but developing data analysis skills will unlock fascinating worlds! In this 10lesson course from statistics teacher Zac Rappell, start by understanding group data and central tendencies (mean, median, and mode), then explore measures of spread (range, IQR, and standard deviation). Learn how to create stem and leaf and box and whisker plots, and practice comparing data sets to identify new relationships. Finish with a fun final project analyzing the Oscars!
with Zachary RappellStatistics may sound like a dry topic, but developing data analysis skills will unlock fascinating worlds! In this 10lesson course from statistics teacher Zac Rappell, start by understanding group data and central tendencies (mean, median, and mode), then explore measures of spread (range, IQR, and standard deviation). Learn how to create stem and leaf and box and whisker plots, and practice comparing data sets to identify new relationships. Finish with a fun final project analyzing the Oscars!

31113 min31part Algebra course73 CQ
Studying for the Regents Exam and need help with the algebra one section? In this course, run through thirtyseven example problems that cover basic algebra concepts you'll need to know to pass.
with Math FortressStudying for the Regents Exam and need help with the algebra one section? In this course, run through thirtyseven example problems that cover basic algebra concepts you'll need to know to pass.

993 min9part Calculus course51 CQ
Calculus students ready to advance to the next level: this course is for you. Learn all about the cross product, starting with the right hand rule, and ending with how to measure torque.
with Math FortressCalculus students ready to advance to the next level: this course is for you. Learn all about the cross product, starting with the right hand rule, and ending with how to measure torque.

934 min9part Math course22 CQ
In elementary math education in second, third, and fourth grade, place value is fundamental, but some kids just don't seem to get it. In this course, get great tips on teaching place value to kids.
with Tom ScherstenIn elementary math education in second, third, and fourth grade, place value is fundamental, but some kids just don't seem to get it. In this course, get great tips on teaching place value to kids.

12109 min12part Calculus course62 CQ
In this calculus course discover the geometric interpretation of the dot product (also known as the scalar product), the component definition of the dot product, and properties of the dot product.
with Math FortressIn this calculus course discover the geometric interpretation of the dot product (also known as the scalar product), the component definition of the dot product, and properties of the dot product.

10119 min10part Algebra course66 CQ
Does solving for x make your head spin? Math teacher Eric Buffington explains the simple steps to finding x, from onestep addition problems to equations with x on both sides of the equals sign.
with Eric BuffingtonDoes solving for x make your head spin? Math teacher Eric Buffington explains the simple steps to finding x, from onestep addition problems to equations with x on both sides of the equals sign.

11120 min11part Math course66 CQ
Polynomials are essential for algebra! From learning what a polynomial is to completing polynomial operations, this Algebra 1 course covers the basics with clear examples for maximum learning.
with Eric BuffingtonPolynomials are essential for algebra! From learning what a polynomial is to completing polynomial operations, this Algebra 1 course covers the basics with clear examples for maximum learning.

26262 min26part Calculus course145 CQ
Ready to pursue more complex calculus topics? Challenge your visualization skills in this math course by covering fundamentals of the threedimensional coordinate system and vectors.
with Math FortressReady to pursue more complex calculus topics? Challenge your visualization skills in this math course by covering fundamentals of the threedimensional coordinate system and vectors.

9 minAlgebra lesson5 CQ
This lesson explains the basics of how to write twocolumn algebraic and geometric proofs. It also covers the elements of an axiomatic system. Let's dig in!
with Math FortressThis lesson explains the basics of how to write twocolumn algebraic and geometric proofs. It also covers the elements of an axiomatic system. Let's dig in!

10 minMath lesson6 CQ
In this lesson, review the concept of square roots and square numbers, discover a fun way to find the square root of perfect squares using a pattern.
with Sanjay NoronhaIn this lesson, review the concept of square roots and square numbers, discover a fun way to find the square root of perfect squares using a pattern.

4 minAlgebra lesson3 CQ
This math puzzle went viral in Japan some time ago after the media reported that only 60% of 20 year olds could arrive at the correct answer.
with Sanjay NoronhaThis math puzzle went viral in Japan some time ago after the media reported that only 60% of 20 year olds could arrive at the correct answer.

3 minAlgebra lesson2 CQ
This viral lesson introduces a viral math problem that looks simple but had thousands confused. Find out how to use order of operations to solve the problem.
with Sanjay NoronhaThis viral lesson introduces a viral math problem that looks simple but had thousands confused. Find out how to use order of operations to solve the problem.

3 minMath lesson2 CQ
Solving math puzzles is fun and keeps the mind sharp. With that in mind, let's take a look at the viral Facebook intelligence test problem. Can you solve it?
with Sanjay NoronhaSolving math puzzles is fun and keeps the mind sharp. With that in mind, let's take a look at the viral Facebook intelligence test problem. Can you solve it?

11 minMath lesson6 CQ
In this lesson, learn the definition of ztransform and follow along to the examples, each of which includes an explanation of the region of convergence.
with Anish TurlapatyIn this lesson, learn the definition of ztransform and follow along to the examples, each of which includes an explanation of the region of convergence.

4 minMath lesson3 CQ
Translation in time is a physical property with applications in many fields. Follow along as Anish works the equation that expresses this principle.
with Anish TurlapatyTranslation in time is a physical property with applications in many fields. Follow along as Anish works the equation that expresses this principle.

3 minFREEMath Nerdy CurioFree2 CQ
In today's Nerdy Curio from Engines of our Ingenuity: a primer on prime numbers, and how renowned mathematicians, including Carl Friedrich Gauss, tried to find patterns in them.
In today's Nerdy Curio from Engines of our Ingenuity: a primer on prime numbers, and how renowned mathematicians, including Carl Friedrich Gauss, tried to find patterns in them.
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325 min3part Biology course14 CQ
Preparing for the AP Biology exam? In this threepart course, get clear explanations of Darwinian evolution by natural selection, modern evolutionary theory, and the history of life on Earth.
with Bleier BiologyPreparing for the AP Biology exam? In this threepart course, get clear explanations of Darwinian evolution by natural selection, modern evolutionary theory, and the history of life on Earth.

7107 min7part iOS Development course57 CQ
Looking for a programming language that can do some heavylifting but doesn't take years to master? When programming for iOS, OS X, and watchOS, Apple's programming language Swift is the best choice!
with Sanjay NoronhaLooking for a programming language that can do some heavylifting but doesn't take years to master? When programming for iOS, OS X, and watchOS, Apple's programming language Swift is the best choice!

11163 min11part iPhones + iPads course88 CQ
Want to get the most out of your iPhone? This course from tech expert Todd Olthoff is the perfect guide, for everything from basic installation to builtin app features.
with Todd OlthoffWant to get the most out of your iPhone? This course from tech expert Todd Olthoff is the perfect guide, for everything from basic installation to builtin app features.

41572 min41part Arduino course303 CQ
Want to build a new robot friend? How about create a cool LED sign? Whatever the gadget may be, get started with this beginnerfriendly Arduino course from Open Source Hardware!
Want to build a new robot friend? How about create a cool LED sign? Whatever the gadget may be, get started with this beginnerfriendly Arduino course from Open Source Hardware!

1270 min12part Science course41 CQ
If you're looking for fun activities for kids that are equal parts science and craft, you'll love this course with lessons covering everything from homemade oobleck to egghead gardens.
with Sophie's WorldIf you're looking for fun activities for kids that are equal parts science and craft, you'll love this course with lessons covering everything from homemade oobleck to egghead gardens.

6103 minFREE6part Engineering courseFree54 CQ
Building a custom gaming computer can be easy when you have a stepbystep guide. Learn how to install each component—from the motherboard to the graphics card—and build a highperformance gaming PC!
with Carey HolzmanBuilding a custom gaming computer can be easy when you have a stepbystep guide. Learn how to install each component—from the motherboard to the graphics card—and build a highperformance gaming PC!

643 min6part Hardware course25 CQ
If you’re looking to put together an electronic prototype that will last, you’ll want to solder the parts together. In this course, learn how to use a soldering iron on sensitive electronics.
with CuriousInventorIf you’re looking to put together an electronic prototype that will last, you’ll want to solder the parts together. In this course, learn how to use a soldering iron on sensitive electronics.

11145 min11part Hardware course80 CQ
Want to become a certified computer genius? Take on the rewarding challenge of building and customizing your own PC. CPU Modder reveals the necessary parts and calls out beginner PC builder mistakes.
with CPU ModderWant to become a certified computer genius? Take on the rewarding challenge of building and customizing your own PC. CPU Modder reveals the necessary parts and calls out beginner PC builder mistakes.

11112 min11part Computer Science course61 CQ
You've likely heard about hacking and tried to protect your online identity from hackers. But what is hacking, who does it, and why? In this complete web hacking basics course, answer these questions!
You've likely heard about hacking and tried to protect your online identity from hackers. But what is hacking, who does it, and why? In this complete web hacking basics course, answer these questions!

1240 min12part Basic Computing course26 CQ
If you're new to either computers or Windows 7 and want to learn how to navigate this easytouse operating system, this beginnerfriendly course from Instructor Gadget is for you.
with Instructor GadgetIf you're new to either computers or Windows 7 and want to learn how to navigate this easytouse operating system, this beginnerfriendly course from Instructor Gadget is for you.